Side bearing for car-trucks.



J J. SKAHBN.

SIDE BEARING POR CAB. TRUCKS.

L APPLICATION FILED FEB. 1s, 190s. 905,7 55.

jig@ 3 HV dl'.

w @i In d;

mms wsrsns co. wAJ-Hmcow, a. c.

Patented Dec. 1, 1908.

UNITED sTATEs PATENT oEEioE.

JAMES J. SKAHEN, OF BUFFALO, NEW YORK, ASSIGNOR, BY DIRECT AND MESNE ASSIGN- MENTS, OF THIRTY-FIVE ONE-HUNDREDTI-IS TO JOHN E. SHEEHAN, EIGHT ONE-HUN- DREDTI-IS `TO GEORGE H. OHARNOOK, AND TWO ONE-HUNDREDTIIS TO MORRIS A.

GRIFFIN, ALL OF BUFFALO, NEW YORK.

SIDE BEARING FOR CAR-TRUCKS.

Specification of Letters Patent.

Patented Dec. 1, 1908.

Application filed February 13, 1908. Serial N o. 415,680.

To all who/m. fit may concern:

Bc it known that I, JAMES J. SKAHEN, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Side Bearings for Car-Trucks, of which the following is a specification.

This invention relates to a side bearing for the trucks of street and other cars.

One of its objects is the construction of a simple bearingof this character which affords a large lubricant chamber and in which the contact area between the main upper and lower members of the bearing is comparatively small so as to minimize the friction.

Further objects of the invention are to render the bearing practically dust-proof, and to so construct the same that the part receiving the greatest wear can be readily renewed independently of the other parts of the bearing, thus greatly lengthening the life of the bearing at comparatively small' additional expense.

Tn the accompanying drawings: Figure l is a top plan view of the lower part of the bearing. Fig. 2 is a longitudinal central section of the complete bearing. Figs. 3 and 4t are transverse sections thereof in lines 3-3 and 4 4, Fig. 2. Fig. 5 is a fragmentary horizontal section in line 5 5, Fig. 2.

Similar letters of reference indicate corresponding parts throughout the several views.

A indicates the usual car or body-bolster, and B the truck-bolster.

C indicates the lower member of the side bearing consisting of an oblong metallic box or case resting upon the truck-bolster and suitably secured thereto, the preferred fastenings shown in the drawings consisting of bolts c, passing through lateral base-flanges c1 of the box and through the truck-bolster. This box is closed at its bottom, sides and ends to form a chamber for a suitable lubricant such as heavy oil or grease. The box is segmental in form and curved substantially concentrieally with the king-bolt of the truck, not shown. In its preferred form, it is comparatively long in proportion to its width and its endportions overhang the sides of the truck-bolster and are stiffened on their under sides by longitudinal ribs Z which abut against said bolster, to resist twisting of the box thereon and relieve the fastening bolts c from undue strains.

At the upper edge of its side walls the box is preferably provided with inwardly projecting dust-shields or flanges e.

F indicates a cover or dust-shield closin the top of the box C. This cover is curve to fit the box and has depending side anges f which overlap the sides of the same.

G indicates the upper member of the bearing secured to the underside of the bodybolster B and extending into the box C and supported therein. This upper member preferably has the form of an inverted trackrail, the broad base of which bears against the underside of said bolster while its ball or head preferably rests upon a wear-plate H of hardened steel or other suitable material removably seated on the bottom of the box C. In the construction shown in the drawings, Fig. 2, this rail is secured to the bodybolster by vertical bolts Z passing through these parts, but it may be otherwise fastened, if desired. The web of the rail passes through a longitudinal slot j of the cover F, and to permit the cover to be applied to the rail, it is divided, preferably crosswise at or near its middle, as shown in Fig. 5. The inner ends of the cover-sections overlap each other and are secured together by bolts or rivets 7c, while the slotted portions of the sections are fitted in transverse grooves Z1 in the ends of the rail G, as shown in Fig. 2. By this construction the cover is secured to and carried by the rail. As shown, the body of the cover is preferably supported clear of the upper edge of the box C, to avoid frictional contact at this point.

The space between the opposing fianges e of the box is of the proper width to freely admit the web of the rail G, and these flanges are sufficiently cut away at a point between their ends, as shown at el, to permit the head of the rail to enter the box.

The wear-plate H extends from end to end ofthe box (j and is divided transversely or' composed of sections as shown, to permit its insertion in and removal from the box. This plate is preferably narrower than the box, or provided in its side-edges with recesses /L to form grooves or pockets adapted to receive any dust or grit working between said plate and the rail Gr. By providing such pockets, dust or grit is free to drop from the Wear plate into the same, preventing it from lodging on the plate and unduly wearing the bearing which might otherwise occur.

lt will be understood that such a side bearing is arranged on each side of the usual center bearing or pivot of the truck-bolster.

W hen the car passes around a curve, the truck-bolster turns at a greater or less angle to the car-body, the box C moving with the bolster and its wear plate H sliding lengthwise along the ball of the rail Gr. As the box is illed with oil, these parts are constantly lubricated. While the box moves bach and forth on the rail, the latter and the cover of the box remain stationary. l

ln order to leep the box closed in all of its positions, the cover is made sufficiently longer than the box for this purpose, the ends of the cover extending beyond the box at both ends in the normal position of the truck, as shown by full lines in Fig. 2 and by dotted lines in Fig. l.

By providing the box with the removable wear plate H, the latter can be readily renewed when worn out, thus prolonging the life of the bearing at a nominal expense and avoiding the necessity and expense of replacing the entire bearing-box.

i claim as my invention:

l. A side bearing for a car-truck, comprising a lower box-hire member adapted to be secured to the truck-bolster, a coperating upper member arranged in said box and adapted to be secured to the bJdy-bolster, and a cover for said lower member held against movement relative thereto, substantially as set forth.

2. A side bearing for a car-truck, comprising a lower box-like member adapted to be secured to the truck-bolster, a coperating upper member arranged in said box and adapted to be secured to the body-bolster, and a cover for said lower member carried by said upper member, substantially as set forth.

3. A side bearing for a car-truck, comprising a lower box-like member adapted to be secured to the truck-bolster, a coperating upper member arranged in said box andadapted to be secured to the body-bolster', and. a cover forsaid lower member having a slot for the passage of said upper member, substantially as set forth.

il, A side bearing for a car-truck, comprising a lower box-like member adapted to be secured to the truck-bolster, a coperating upper member arranged in said box and adapted to be secured to the body-bolster, and a cover for said lower member having a slot for the passage of said upper member and composed of sections each containing a portion of said slot, substantially as set forth.

5. A side bearing for a car-truck, comprising a lower box-like member adapted to De secured to the truck-bolster, a coperating upper member arranged in said box andv adapted to be secured to the body-bolster, said upper member being provided in its ends with grooves, and a cover for said lower member having a slot for the passage of said upper member and composed of sections which engage said grooves, substantially as set forth.

6. A side bearing for a car-truck, comprising a lower box-like member adapted to be secured to the truck-bolster and provided at its upper edge with inwardly-extending dust-excluding iianges, an upper member arranged in said box and adapted to be secured to the body-bolster, and a cover for said lower-member, substantially as set forth.

7. A side bearing for a car-truck, comprising a lower box-like member forming an oil chamber and adapted to be secured to the truck-bolster, and a coperating upper mei ber arranged in and supported by said lower member and consisting of an inverted rail adaptedto be secured to the body-bolster, substantially as set forth.

8. A side bearing for a car-truck, comprising a lower box-like member forming an oil chamber and adapted to be secured to the truck-bolster, a coperating upper member arranged in and supported by said lower member and consisting` of an inverted rail adapted to be secured to the body-bolster, and a cover for the lower member carried by said rail, substantially as set forth.

9. A side bearing for a car-truck, comprising a lower box-like member forming an oil chamber and adapted to be secured to the truck-bolster, a wear-plate removably seated in said box-like member, and an upper member resting upon said wear plate and adapted to be secured to the body-bolster, substantially as set forth.

10. A side bearing` for a car-truck, comprising a box-like lower member provided in its bottom with a dust-receiving. pocket,

and an upper member arranged in and supranged n said lower member and resting on ported by said lower member, substantially said Wear-plate, substantially as set forth. 10

as set forth. Witness my hand this 8th day of Februll. A side bearing for a car-truck, com ary, 1908.

prising` a box-like lower member, a Wear JAMES J. SKAHEN.

plate removably seated therein and provided Witnesses:

With recesses forming dust-receiving pockets, GEORGE H. CHARNOCK,

r21nd an upper member consisting of a rail ar- C. F. GEYER. 

